Igor Drozdov questions

Igor Drozdov answers

• In Rails, how do I delete all the objects in an array?
• Format Ruby string to 3 characters with an integer
• How to do without delete_if for Active Record?
• Understanding Folds in Haskell
• Can a self join association be done allowing the reference to be blank?
• Rspec expect to recieve message with attributes and ignore others
• How to extract the list of countries into an array from country_select gem
• Rails.cache.clear returns nil
• How to make shared example with RSpec with parametrized code to test without using eval method?
• How to break out from a fold function in haskell when the accumulator met a certain condition?